Writing instrument



FIG. 1 is a side elevation view of the writing instrument according to the new design.

FIG. 2 is a front elevation view.

FIG. 3 is a side elevation view thereof, opposite of FIG. 1.

FIG. 4 is a rear elevation view.

FIG. 5 is a bottom plan view, enlarged for clarity.

FIG. 6 is a top plan view, enlarged for clarity; and,

FIG. 7 is a perspective view. 

The ornamental design for a writing instrument, as shown and described. 